diff --git a/lib/less/visitors/import-sequencer.js b/lib/less/visitors/import-sequencer.js
index 6fb46399..779faf9e 100644
--- a/lib/less/visitors/import-sequencer.js
+++ b/lib/less/visitors/import-sequencer.js
@@ -1,5 +1,6 @@
 function ImportSequencer(onSequencerEmpty) {
     this.imports = [];
+    this.variableImports = [];
     this._onSequencerEmpty = onSequencerEmpty;
 }
 
@@ -18,14 +19,26 @@ ImportSequencer.prototype.addImport = function(callback) {
     };
 };
 
+ImportSequencer.prototype.addVariableImport = function(callback) {
+    this.variableImports.push(callback);
+};
+
 ImportSequencer.prototype.tryRun = function() {
-    while(this.imports.length > 0) {
-        var importItem = this.imports[0];
-        if (!importItem.isReady) {
-            return;
+    while(true) {
+        while(this.imports.length > 0) {
+            var importItem = this.imports[0];
+            if (!importItem.isReady) {
+                return;
+            }
+            this.imports = this.imports.slice(1);
+            importItem.callback.apply(null, importItem.args);
         }
-        this.imports = this.imports.slice(1);
-        importItem.callback.apply(null, importItem.args);
+        if (this.variableImports.length === 0) {
+            break;
+        }
+        var variableImport = this.variableImports[0];
+        this.variableImports = this.variableImports.slice(1);
+        variableImport();
     }
     if (this._onSequencerEmpty) {
         this._onSequencerEmpty();
diff --git a/lib/less/visitors/import-visitor.js b/lib/less/visitors/import-visitor.js
index b19ec7a9..9b8e4b22 100644
--- a/lib/less/visitors/import-visitor.js
+++ b/lib/less/visitors/import-visitor.js
@@ -27,6 +27,7 @@ ImportVisitor.prototype = {
         }
 
         this.isFinished = true;
+        this._sequencer.tryRun();
         if (this.importCount === 0) {
             this._finish(error || this.error);
         }
@@ -113,9 +114,13 @@ ImportVisitor.prototype = {
         var subFinish = function(e) {
             importVisitor.importCount--;
 
-            if (importVisitor.importCount === 0 && importVisitor.isFinished) {
-                importVisitor._finish(e || importVisitor.error);
-            } else if (e) {
+            if (importVisitor.isFinished) {
+                this._sequencer.tryRun();
+                if (importVisitor.importCount === 0) {
+                    importVisitor._finish(e || importVisitor.error);
+                }
+            }
+            if (e) {
                 importVisitor.error = e;
             }
         };